Some of you might have noticed that most of the values can be set outside slider range. This is intentional. The Polynomial is not guaranteed to work with out of range values, and the results may depend to your graphics card, but lot of the time it does produce something interesting.
Here's I start:
set desaturate to negative values, or positive values greater than 1 . Try set gamma to negative values (-0.5).
Try huge values (you can use scientific format, e.g. 1E20 for 1 followed by 20 zeroes)
Feel free to post videos of your explorations!